to review by scientists at regulatory agencies. the 2008 e.u. risk assessment for pdcpp using all the best information available concludes that tdcpp gives no reason for concern to human health in relation to the physics chemical properties. couch manufacturers are mandated by law to use it in the foam stuffing. it's a little known law in california known as technical bulletin 17 which says the couch must be able to withstand exposure to a small flame for 12 seconds without igniting. while the regulation applies only to california, manufacturers use it in all the products instead of creating special furniture for the west coast. >> that is what is left after a couple minutes of burning. >> i believe fire retardant is good but they should use other chemicals or safe chemicals that doesn't affect the breathing of other people involved in it. they should find other methods to make the fire retardant safer. >> reporter: there are no warning labels so you don't know what chemicals are inside your couch. >> even if i wanted to make a choice about it, i wouldn't have been able to plaque a choice.